Blockage and swelling in your sinuses caused by viruses, bacteria or allergic reactions exerts pressure on your nasal linings leading to pain and headaches. Sinusitis simply means your sinuses are infected or inflamed, and this gives little indication of the misery and pain this condition can cause. When this condition repeats itself frequently with each episode lasting for about 3 to 8 weeks, it is called chronic sinusitis.

Chronic sinusitis is commonly caused by Allergies or bacterial infection since they are the main sources of inflammation in the sinus membranes. When your nasal lings become irritated, they produce excessive mucus, leading to both post nasal drip and a runny nose. Other disorders that may cause post nasal drip are swallowing problems, vasomotor rhinitis, and inhalants (such as mol spores and dust).

Any condition that causes a weakened immune system or that causes chronic inflammation to the nasal mucous such as asthma or allergic disorders can also result in chronic sinusitis.

Symptoms of chronic sinusitis

Symptoms of chronic sinusitis are similar to those of acute and recurrent sinusitis, but they are experienced on a continuous basis. Symptoms of chronic sinusitis last for about 3 to 8 weeks and may recur for months or even years. The general symptom of chronic sinusitis is pain in the sinus area accompanied by thin watery secretions.

Other symptoms of chronic sinusitis include:

• Severe headache
• Throbbing facial pains
• Runny nose
• Tiredness
• Sneezing
• Tenderness over sinus region
• Recurring sore throats
• Halitosis

If your symptoms match these, then you might be suffering from chronic sinusitis or induced post nasal drip. See your physician, preferably an otolaryngologist, for diagnosis and treatment options.

Other factors that may trigger post nasal drip

Various factors contribute to the over-production of mucus and nose glands irritation, thus triggering post nasal drip. Besides vasomotor rhinitis, inhalants and swallowing problems, the following factors may trigger post nasal drip:

• Cold temperatures
• Sinus or nasal infections
• Pregnancy and changes in hormones
• Low humidity
• Side effects of other medication
• Nasal tumors
• Gastroesophageal reflux